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Preparation method of SBS (styrene-butadiene-styrene) rubber graft polymer emulsion

A polymer emulsion and rubber grafting technology, applied in the field of materials, can solve the problems of workers' health hazards, respiratory diseases, neurological diseases and even leukemia, yellowing of the material surface, etc., and achieve good treatment effects.

Inactive Publication Date: 2014-04-30
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toluene solution of trichloroisocyanuric acid can have a good bonding effect after treating TPR, but it is unstable and needs to be prepared temporarily, and it is easy to make the surface of the material turn yellow and affect the appearance.
Li Weiguang developed a surface treatment of TPR soles with methyl methacrylate and SBS rubber graft copolymer solution [Adhesive, 2002, 23 (3) 19], in which toluene is a moderately toxic solvent , can accumulate in the human body, long-term exposure can lead to respiratory diseases, neurological diseases and even leukemia, etc., causing serious harm to the health of workers in production and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 100g butanone, 20g ethyl acetate, 20g methyl methacrylate and 30g SBS rubber in the reaction flask equipped with thermometer, nitrogen device, mechanical stirring device, vacuum device and condenser tube, stir, and control the temperature to be 60 ℃; after the SBS rubber is completely dissolved, fill the reaction flask with nitrogen, and after the temperature rises to 80 ℃, add a mixed solution of 1.5g benzoyl peroxide and 20g acrylic acid by dropwise method, and carry out the polymerization reaction for 3 hours; cool down to 50 ℃, 50% of the solvent in the system was distilled off under reduced pressure, then 10 wt% triethylamine aqueous solution was added to the pH value of the system to 6.5, and the salt-forming reaction was carried out for 0.5 hours; 600g deionized water was gradually added under high-speed stirring, and finally 5g poly Stir the vinylpyrrolidone evenly to obtain the grafted polymer emulsion of SBS rubber.

Embodiment 2

[0021] Add 130g methyl ethyl ketone, 30g ethyl acetate, 40g methyl methacrylate and 50g SBS rubber in the reaction flask that thermometer, nitrogen device, mechanical stirring device, vacuumizing device and condensing pipe are housed, stir, control temperature is 70°C; after the SBS rubber is completely dissolved, fill the reaction flask with nitrogen, and after the temperature rises to 90°C, add a mixed solution of 2.5g of benzoyl peroxide and 40g of methacrylic acid by dropwise method, and carry out the polymerization reaction for 4 hours; Cool down to 60°C, remove 80% of the solvent in the system by distillation under reduced pressure, then add 10 wt% dimethylaminoethanol aqueous solution until the pH of the system is 8.5, and react for 1 hour to form a salt; gradually add 800g of deionized water under high-speed stirring, Finally, 10 g of polyvinylpyrrolidone was added and stirred evenly to obtain a grafted polymer emulsion of SBS rubber.

Embodiment 3

[0023] Add 120g butanone, 21g ethyl acetate, 22g methyl methacrylate and 32gSBS rubber in the reaction flask equipped with thermometer, nitrogen device, mechanical stirring device, vacuum device and condensing tube, stir, control temperature is 61 ℃; after the SBS rubber is completely dissolved, fill the reaction flask with nitrogen, and after the temperature rises to 81°C, add a mixed solution of 1.6g benzoyl peroxide and 22g acrylic acid by dropwise method, and carry out the polymerization reaction for 3.5 hours; cool down to 51°C ℃, 52% of the solvent in the system was distilled off under reduced pressure, then 10 wt% triethylamine aqueous solution was added to the pH value of the system to be 7, and the salt-forming reaction was carried out for 35 minutes; 620g deionized water was gradually added under high-speed stirring, and finally 6g poly Stir the vinylpyrrolidone evenly to obtain the grafted polymer emulsion of SBS rubber.

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Abstract

The invention relates to a preparation method of an SBS (styrene-butadiene-styrene) rubber graft polymer emulsion. The preparation method comprises the steps of adding butanone, acetic ether, methyl methacrylate and SBS rubber into a reaction kettle, stirring, and controlling the temperature to be 60-70 DEG C; introducing nitrogen, then heating to 80-90 DEG C, adding a mixed solution of benzoyl peroxide and an acrylic monomer, and performing polymerization for 3-4 hours; cooling to 50-60 DEG C, performing reduced pressure distillation to remove 50-80% of a solvent, then adding a neutralizing agent until the pH value of the system is 6.5-8.5, and performing salt forming reaction for 0.5-1 hour; and gradually adding deionized water under high-speed stirring, adding polyvinylpyrrolidone at last, and uniformly stirring. According to the method, SBS rubber is grafted with acrylic acid and an ester monomer to form the graft polymer emulsion; the graft polymer emulsion is used for performing surface treatment on a TPR (thermal plastic rubber) sole material during cold bonding shoemaking, is good in treatment effect, can meet bonding requirements for shoemaking industries, and accords with requirements on environmental protection.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a preparation method of a surface treatment agent, in particular to a preparation method of an SBS grafted polymer emulsion used for the bonding surface treatment of TPR shoe sole materials in cold bonding shoemaking. Background technique [0002] Thermoplastic elastomer (also known as thermoplastic rubber), which is made of symmetrical block styrene-butadiene rubber (SBS rubber) as the main body and processed with other materials, is a kind of rubber with both rubber and thermoplastic properties. It shows rubber at room temperature. It is a polymer material with high elasticity and can be plasticized at high temperature. It is also the so-called third-generation rubber after natural rubber and synthetic rubber. It is abbreviated as TPR. Because of its wear resistance, easy processing and low price, it is widely used as shoe soles Materials, especially middle and high-grade s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F287/00C08F220/06C08F220/14C08F4/34C08L51/04C08L39/06
Inventor 袁求理
Owner HANGZHOU DIANZI UNIV
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